Do you mean all the tweets or just one with a report and if so which one, there's loads?Lukas Knofler has done a REALLY good thread on Twitter about this - evidence backed research about the UCI's position on this in relation to Salbutamol offences. It's not an easy read and is quite complex, but worth sticking with it.
He has written 36 tweets on it, you need to scroll down to the first one.
https://twitter.com/lukascph?lang=en